512345:  net-snmp not correctly returning hrSWRunPath

Source: upstream, SVN rev. 17460

    Proper check for empty process status file.
    (Avoids truncated walk of hrSWRunPath on SuSE systems)
    Reported by Kamil Kisiel.
    
    
    
    git-svn-id: https://net-snmp.svn.sourceforge.net/svnroot/net-snmp/trunk@17460 06827809-a52a-0410-b366-d66718629ded

diff --git a/net-snmp/agent/mibgroup/host/hr_swrun.c b/net-snmp/agent/mibgroup/host/hr_swrun.c
index b6ade26..71e5409 100644
--- a/net-snmp/agent/mibgroup/host/hr_swrun.c
+++ b/net-snmp/agent/mibgroup/host/hr_swrun.c
@@ -752,8 +752,7 @@ var_hrswrun(struct variable * vp,
             sprintf(string, "/proc/%d/status", pid);
             if ((fp = fopen(string, "r")) == NULL)
                 return NULL;
-            fgets(buf, sizeof(buf), fp);        /* Name: process name */
-            if ( cp == NULL ) {
+            if (!fgets(buf, sizeof(buf), fp)) {
                 fclose(fp);
                 return NULL;    /* the process probably died */
             }